Filtering unit cleaner



Dec. 31, H, 1 MQDEVlTT 2,226,870

FILTERING UNIT CLEANER V `Filed Nov. 9, 1937A INVENTOR ATTORNEY 30 to be understood that the various Patented Dec. 31, 1940 PATENT oFFicE FILTERING UNIT CLEANER I Harry James McDevitt,

Media, Pa., assigner, by

mesne assignments, to Vulcan Manufacturing Co., Inc., St. llaul,rAMirin.,` a corporation of Minnesota v Application Nor/empero, 193.7, serial No. 173,571

2 Claims.

'Ihe object of this invention is to devise a novel construction of a cleaner which, although not limited to such use, is especially adapted to 'be employed in cleaning lteringunits of automobile carbureters.

Al further object is to provide a column of cleaningrfluid in the standard and to cause the' compressed air to pass through a restricted opening into a discharge passage, preferably in such 'a manner to give a rotary turbulence to the cleaning uid and air as they pass through the ltering unit. Y

A further object of the invention is to provide a novel support for the filtering unit having one or more openings spacedA above the bottom of the tank, so that the sediment and dirt from the ltering unit will be collected in the bottom of the tank instead of being recirculated through the filtering unit.

With the above and other objects in view as will hereinafter clearly appear, my invention comprehends a novel filtering unit cleaner.

Other novel features of construction and advantage will hereinafter more clearly appear in the detailed description and the appended claims.

For the purpose of illustrating the invention, I have shown in the accompanying drawing a typical embodiment of it, which, in practice, will give satisfactory and reliable results. It is, however,

instrumentalities of which my invention consists can be variously arranged and organizedr and my invention is not limited to the exact arrangement and organization of these instrumentalities as herein set forth.

"45 of a fitting.

Similar numerals of reference indicate corresponding parts.

Referring to the drawing:

I designates the tank of a filtering unit cleaner, embodying my invention. The cleaner is provided with a skeleton base 2 apertured to receive a tubular column 3 which is closed at its lower end by a removable threaded plug 4. The upper end of the column 3 is threaded into a reducing 55, fitting 5 having a threaded opening at one side to receive the compressed air supply pipe 6 which is provided with a controlling valve 'I. A branch pipe'8 extends above the tank and carries a pressure gauge 9. A connecting member in the form ofa fitting IIJ connects the fitting 5 with' the tank I. 'I'he fitting I0 has a threaded lower extension II in engagementwith the fitting 5 and an upper threaded extension I2 which extends through an opening in the bottom of the tank I and through thebottom of a bowl or cup shaped supporting member I3. The casting AII) has a flange I4 between which and the bottom of the tank a gasket I5 is interposed. A gasket I6 is provided between the bottom of the tank I and the member I3. -A nut I'I engaging the threaded extension I2 retains the member I3 and the tank in sealed condition'with the connecting member I D. 'I'he member I3 has one or more openings I8 through its side walls and spaced from the bottom of the tank. The member I3 forms a support forthe filtering unit I9 to be cleaned which is inserted into the tank through its upper open end.

The top of the tank is closed by a cover having a friction t therewith.

The upper marginal edge of the tank is ared outwardly to receive the outwardly deflected shoulder forming portion 2I of the cover and thus limit the extent to which the cover can be pushed into the tank. The cover is provided with a handle 22 and with a vent opening 23. The bottom of the tank has a drain plug 24 to facilitate the removal of dirt and foreign matter removed from the filtering units.

The fitting I0 has an upper passage 25 and a lower passage 26 which are in communication by a restricted, passage or port 21. The inner ends of the passages and 26 are partially coned with a curved raised portion 28 which tends to give a swirling or rotary motion to the compressed air as it passes from the discharge passage 25 into the tubular extension 29 of the ltering unit to be cleaned.

The operation will now be apparent to those skilled in this art and is as follows:

The cover of the tank is removed and a cleansing iiuid such as kerosene is poured into the tank. The filtering unit is placed in the chambered support with the tubular extension at the bottom, and the cover replaced. The high pressure air is now turned on, and the compressed air passes into the reducing fitting 5 entraining the kerosene therein and passes to the lower passage 26 of the fitting I0, through the restricted passage 21, and through the upper passage 25 \into the tubular extension of the filtering unit. The cone and curved portions 28 give a rotary motion to the kerosene and compressed air as it passes through the filtering unit. When the highly compressed air passes into the fitting 5, the liquid in such fitting is entrained by the air and passes with it through the passage 26, into the fitting l0. When the compressed air strikes the lower raised portion 28 and the cone shaped upper end of the passage 26, a whirling motion is imparted to it, and such motion is increased when the air leaves the restricted passage 21 and strikes the raised portion 28. The air, passing upwardly from the passage 25, thus has a whirling mo#- tion imparted to it, and the highly compressed air with the entrained cleaning fluid' passes through the filter and its passages under high pressure to effectively remove dirt, grease and foreign impurities. The dirt and foreign material in theY filtering unit passes out through conventional openings in the upper side wall of the filtering unit, and such materials collect at 4the bottom of the tank below the openings I8 in the support-` ing member I3. v

The cleaning fluid is entrained through the` openings I8: and is circulated by the compressed air through the filteringA unit.

It will now be apparent that I have devised-.a new and useful ltering unit cleaner, which em-` bodies the features of advantage enumerated as desirable inthe statement of the inventionI andy the above descriptiomand while I have. in the present instance, shown and? described an pre-` ferred embodiment thereof, which will givein practice satisfactory and reliable results, it is to be understood that this embodiment is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages. e'

Having thus described my invention, what I claim as new and desire to secure by Letters Pat| .ent is:

tainer nut Within said support on said threaded member to retain said tank, nozzle means and support assembled relative to each other, said nozzle means havingv a passage extending therethrough, and means to feed compressed air through said passageway.

`2. In a, filter unit cleaner, a tank adapted to contain'cleaning fluid and having an opening in the bottom thereof, nozzle means comprising a threaded member extending through said opening into said tank and having an integra-lflange surroui'idingV the intermediate portionofY said member, a support for saidtankthreadedonto the lower end of: said threaded member, a cuplike,` support `for the filter unit,l said` support `having; an opening receiving the upper end of' said threadedmember, aretainer'nut within said support on said upper end of said threaded member, said threaded member having a passageway therethrough; andv means to supply compressed air through said passageway.

HARRY JAMES MCDEVITT, 

